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Apr 7, 2016 8:29 AM
(633 views)

Hello everyone,

I was trying to build a model with a random effect which is an ordinal variable.

However I got the following alert:

Does it mean that it is impossible to choose an ordinal variable for a random effect or is my variable an exception?

Thanks in advance for your answers.

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Solution

No, it does not take an ordinal variable as an random effect; it only accepts a nominal variable as a random effect. (The Random Effects tab in **Mixed Model** personality is used to specify a variance component model or random coefficients model, while **Attributes> Random Effect **available in

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**Mixed Model** personality is used to specify a variance component model or random coefficients model, while **Attributes> Random Effect **available in

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Apr 13, 2016 11:33 PM
(510 views)

Hello jiancao,

Sorry for the delay and thank you for your answer.

So I am gonna transform my variable before use it as a random effect.

Thanks again.